Exclude bots from generated release notes

[hugovk]

Description

Looking at the last release notes:

https://github.com/jazzband/django-simple-history/releases/tag/3.4.0

Of the 58 bullet points, 29 are by @dependabot and 12 are by @pre-commit-ci, leaving just 17 actual changes by real people, which are very hard to see.

Related Issue

Motivation and Context

We can see what has changed more easily in generated release notes.

How Has This Been Tested?

It's used by other projects:

• https://github.com/tox-dev/pyproject-fmt/blob/main/.github/release.yml
• Before: https://github.com/tox-dev/pyproject-fmt/releases/tag/0.4.0
• After: https://github.com/tox-dev/pyproject-fmt/releases/tag/0.5.0

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)

Checklist:

• I have run the pre-commit run command to format and lint.
• My change requires a change to the documentation.
• I have updated the documentation accordingly.
• I have read the CONTRIBUTING document.
• I have added tests to cover my changes.
• I have added my name and/or github handle to AUTHORS.rst
• I have added my change to CHANGES.rst
• All new and existing tests passed.

[codecov]

Codecov Report

Merging #1231 (e40609c) into master (2d0fea3) will not change coverage.
The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1231   +/-   ##
=======================================
  Coverage   97.08%   97.08%           
=======================================
  Files          23       23           
  Lines        1271     1271           
  Branches      208      208           
=======================================
  Hits         1234     1234           
  Misses         19       19           
  Partials       18       18           

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[theryanwalker]

LGTM!

[ddabble]

Oh neat, didn't know this existed 😄 Thank you!